linux-kernel - Re: [PATCH 1/3] ACPI: watchdog: remove unnecessary CONFIG_PM

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Date:   Thu, 29 Oct 2020 06:02:43 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Coiby Xu <coiby.xu@...il.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc:     "open list:WATCHDOG DEVICE DRIVERS" <linux-watchdog@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] ACPI: watchdog: remove unnecessary CONFIG_PM_SLEEP

On 10/29/20 12:53 AM, Coiby Xu wrote:
> SET_NOIRQ_SYSTEM_SLEEP_PM_OPS has already took good care of CONFIG_PM_CONFIG.
> 
Not really.

> Signed-off-by: Coiby Xu <coiby.xu@...il.com>
> ---
>  drivers/watchdog/wdat_wdt.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
> index 3065dd670a18..0d912ceb2ecd 100644
> --- a/drivers/watchdog/wdat_wdt.c
> +++ b/drivers/watchdog/wdat_wdt.c
> @@ -465,7 +465,6 @@ static int wdat_wdt_probe(struct platform_device *pdev)
>  	return devm_watchdog_register_device(dev, &wdat->wdd);
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int wdat_wdt_suspend_noirq(struct device *dev)

You would have to add __maybe_unused here for this to work as intended.

Guenter

>  {
>  	struct wdat_wdt *wdat = dev_get_drvdata(dev);
> @@ -526,7 +525,6 @@ static int wdat_wdt_resume_noirq(struct device *dev)
>  
>  	return wdat_wdt_start(&wdat->wdd);
>  }
> -#endif
>  
>  static const struct dev_pm_ops wdat_wdt_pm_ops = {
>  	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(wdat_wdt_suspend_noirq,
>